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scsi

Author	Topic
shaktiman Senior Member United Kingdom 1226 Posts	Posted - 13 Nov 2002 : 06:03:01 I want to know more. When did scsi start/finish? What is the best scsi? ie:- reliable/capacity/speed? What is the best scsi my 840av can handle? What would be the best a powermac 8110/110av could handle? is there anything else I should know? shaktiman Quadra 840av, prettymuchmaxedout8xcd drive,3 monitors 15" & 14" & 14" os 8.1 Powerbook Duo 280c, 12 meg ram, 500 meg hard drive Performa400(asleepintheattick)
cinemafia Guerrilla Recon Leader USA 2965 Posts	Posted - 13 Nov 2002 : 08:36:12 SCSI, which stands for Small Computer Serial/System Interface, was invented by Seagate in the mid-80's. SCSI is still impletedmented today and just keeps getting faster, so I don't think we'll see it finishing anytime soon. The best SCSI as of now is Ultra320 SCSI, which has a maximum theoretical external transfer rate of 320MB/sec. SCSI has since the days of SCSI-2 been more reliable than IDE, though today the gap between the two in terms of reliability is very small. The Quadra 840av has been known to push data around at 36MB/sec with the right configuration, so I'm going to say that it has a maximum thoroughput of at least 40MB/sec. That aside, the best SCSI it supports really comes down to the hardware available. The fastest Nubus SCSI cards are the FWB JackHammer, the ATTO SE IV and the ATTO SE IV Differential, which all support Ultra-Wide SCSI and have a theoretical max speed of 20MB/sec. If you combine two or more of these cards and several drives in a RAID level 0 configuration, you can get 30MB/sec or more. The PowerMac 81xx is the same as the 840av in this regard. 666th poster and 666th thread-creator Mod of the Mac II series Forums Total 68K Macs liberated: 7 My Site: http://cine.sytes.net My Hotline Server: 840av.sytes.net
Trash80toG-4 NIGHT STALKER USA 2899 Posts	Posted - 13 Nov 2002 : 09:15:09 quote: The best SCSI as of now is Ultra320 SCSI, which has a maximum theoretical external transfer rate of 320MB/sec. SCSI has since the days of SCSI-2 been more reliable than IDE, though today the gap between the two in terms of reliability is very small. The ONLY reason SCSI is considered any more reliable than IDE is that you're talking about very high proced drive not intended for anything but server applications as compared to low priced consumer oriented drives in the same sentence. The fact of the matter is that SCSI on macs (or PC's for that matter) has probably never really been any more reliable than IDE, the actual drive mechanisms are exactly the same with the controller boards in most cases being the only differentiation for drives found on desktop computers. jt ™. Trash Hauler: call sign: eight-ball C.O. AC-130H SpecOps 68kMLAAF

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